Question

LACTATION : 1. The mammary glands of the female undergo differentiation during pregnancy and starts producing milk towards the end of pregnancy by the process called lactation. 2. The milk produced during the initial few days of lactation is called colostrum which should be discarded. Regarding 1 and 2 :

Answer 1

1 is true but 2 is false. Because 1st milk should not be discarded as it contains IgA protein.

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Answer 2

1) Prolactin causes differentiation of mammart tissues and causes lactation.

2) yellowish milk produced contains several antibodies mainly IgA. It leads to acquired immunity of child.